Physics A periscope works on the principle of Refraction Reflection Total internal reflection Diffraction Refraction Reflection Total internal reflection Diffraction ANSWER DOWNLOAD EXAMIANS APP
Physics Which of these is true of all simple machines? Work input > work output None of these These make work easier Both A & B Work input > work output None of these These make work easier Both A & B ANSWER DOWNLOAD EXAMIANS APP
Physics The damage of the human body due to radiation (X-rays or grays etc,) is measured in : Rads Rems Curie Roentgen Rads Rems Curie Roentgen ANSWER DOWNLOAD EXAMIANS APP
Physics A wire of copper having length I and area of cross-section A is taken and a current i is flown through it. The power dissipated in the wire is P. If we take an aluminium wire having same dimensions and pass the same current through it, the power dissipated will be > P P 2P < P > P P 2P < P ANSWER DOWNLOAD EXAMIANS APP
Physics Which of the following is the fastest communication channel? Microwave Optical fiber Radio wave All are operating at nearly the same propagation speed Microwave Optical fiber Radio wave All are operating at nearly the same propagation speed ANSWER DOWNLOAD EXAMIANS APP
Physics Rotameter is used to measure Velocity of fluid in pipes Flow of fluids Vortex flow Density of fluids Velocity of fluid in pipes Flow of fluids Vortex flow Density of fluids ANSWER DOWNLOAD EXAMIANS APP
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